I have an ice character, named Kid Frost.
I will make sure the ice blocks are not a thing on him. Didn't realize had the choice for different ice effects, just assumed color variations.
If you have a base with the mission computer, you can create tip missions, I find once you get the ball rolling tip missions should start popping up as you play.
Make sure you defeat all baddies when playing your tip mission. A lot of times I get additional tip missions from enemies I skipped past earlier.
If you want to grind for something go ahead. Enforce the original restrictions on yourself.
For instance, I prefer to change my alignment the old fashioned way. I avoid Null the Gull and use the tip system.
The great part about homecoming is that people have lots of different avenues to play the game in a way that is fun for them.